Gun recoil mechanism



July 5, 1949. s. G. GREEN Er AL 2,475,090

GUN RECOIL MECHANISM Original Fil'e'd Dec. 31, 1943 6 Sheets-Sheetl 1 July 5, 1949. $56. GREEN Erm. 2,475,090

. Y GUN RECOIL MECHANISM Original Filed Dec. 51, 1945 Y 6 Sheets-Sheet 2 July 5, 1949. s. G. GREEN ETAL GUN RECOIL MECHANISM 6 snet's-sheet 5 Original Filed Dec. 31. 1943 www,

July 5, 1949 s. G`. GREEN r-:rAL 2,475,090

GUN REcoIL MEcHANIsM Original Filed DBG. 51, 1945 6 Sheets-Sheet 4 I July 5i 1949 s. G. GREEN ETAI. 2,475,090

GUN RE`co1L MEcHANrsu Orzlgilxal` Filed Dec. 31. 1943 6 Sheets-Sheet 5 Patented July 5, A1949r GUN ReconJ MECHANISM Samuel G. Green,

DArdenne, Jenkintown Manor, Meinel, Huntingdon Valley,

Montgomery Horsham Township,

assgnors, by direct and Heintz Manufacturing Company,

Alexandria, Va., and Walter H.

William J. and Weber Devore, County, Pa., mesne assignments, to Philadelphia,

Pa., a corporation of Pennsylvania Original application December 31, 1943, Serial No. d this application May 23,

516,520. Divided an 1946, Serial No. 671,874

(Cl. Sil- 44) 4 Claims.

This application is a division of copending application, Serial No. 516,520, led December 31, 1943, which issued on July 30, 1946, as Patent No. 2,404,958.

This invention relates to gun recoil devices and more particularly to a recoil mechanism for ma- -chine guns.

An object of the invention is to provide an improved recoil mechanism of the type referred to above.

Another object of the invention is to provide an improved recoil mechanism which is light in Weight, simple to manufacture in large scale production, and easy to assemble and disassemble.

These and other objects of the invention will be apparent from the following specication and the accompanying drawings, in which:

Figure 1 is a side elevational view of a machine gun mount employing an improved recoil mechanism;

Figure 2 is a top plan view of the cradle assembly of the mount shown in Figure 1;

Figure 3 is a side elevational view of the cradle assembly;

Figure 4 is a side elevational view of the cradle assembly taken n the opposite side to Figure 3;

Figure 5 is a rear end elevational view of the cradle assembly;

vFigure 6 is a detail plan View of the recoil mechanism;

Figure '1 is a detail side elevational view of the recoil mechanism;

Figure 8 is a detail front end view of the recoil mechanism; and

Figure 9 is a longitudinal sectional view taken on line 9-9 of Figure 6.

In the preferred embodiment of the invention shown in the drawings, the novel recoil mechanism is used with a mount which includes a vertical pedestal support or stand i adapted to support detachable legs 2 forming a tripod support. A trunnion bracket 3 is detachably secured to the upper end of the stand l. The upper portion of the stand l is mounted for rotary movement about the vertical axis of the stand so that trunnion bracket 3 is capable of movement in a horizontal plane over 360.

The upper end of the trunnion bracket 3 supports the cradle assembly 4 for pivoting movement in a vertical plane. The cradle assembly 2 is adapted to carry a gun, such as a cal. .50 Browning water-cooled machine gun 5 (shown in broken lines). The cradle assembly 4 and gun may be elevated from minus 15 to plus 90.

The cradle assembly 4 further includes a trigger frame, indicated generally by the reference numeral t, a trigger side plate mechanism 1 adapted to be secured to the side of the gun 5, a recoil mechanism to be described in detail presently, and a spent ammunition link chute 9. The cradle assembly 4 is adapted to detachably receive an ammunition chest I9 (shown in broken lines).

The trunnion bracket 3, at its base, is provided with means for detachably receiving a shield support Il carrying an armor plate shield l2 at its upper end.

The cradle assembly 4 is comprised generally of two parallel spaced plates 1l, 12 bolted to blocks 13 and 14 so that the blocks serve as spacing means for the plates. The blocks 13, 14 are each provided with a pair or bores in which the ends of the parallel rods 88, 89 are mounted for longitudinal sliding movement. The pairs of bores are provided with suitable bearings to facilitate such sliding movement. The blocks 13, 14., are provided with threaded openings such as 90 in their side faces to permit the cradle plates 1 I, 12 to be bolted thereto.

Adjacent the forward block 13 and mounted rigidly on the rods 8B, 89 is a bracket 91 having two upstanding arms 92, 92 provided with aligned transverse openings 93 to receive a removable pin 961 which is adapted to pass through an opening in the gun so as to secure the gun to the recoil mechanism.

Another bracket 95 is mounted rigidly on the rods 88, 89 near the block 14 and this bracket has arms 96, 99 provided with aligned openings 91 to receive a pin 98 adapted to pass through another portion of the gun.

The bracket 95 is provided with a central opening adapted to receive a rod 99 which passes therethrough. The rod 99 also passes through an opening in the block 14. Collars 100, |00 are secured at each end of the rod 99 and a coil spring |01 surrounds the rod 99. This spring bears at one end against the bracket 95 and at the other end against the block 14. A second coil spring 192 of less tensional strength than spring l0! 3 also sui rounding the rod 99 bears at one end against the collar and at the other against the inner wall I03 of a countersunk bore |04 in the block 'I4 which bore is coaxial with the opening through which the rod 99 passes.

Machine guns of the type used in this mount are provided with their own interior recoil devices but any excess recoil or rebound movements in either a kforward or backward direction are absorbed by the two-way recoil mechanism described. It will be seen that since the gun is secured at two points to the brackets 19,1 and 95, respectively, any recoil movement transmitted to the brackets and rods 88, 89 will be absorbed by the spring while rebound 'movement in the other direction will be taken upbythe spring 102.

This arrangement is not only ,ernment in 44operation but is light in weight and simple in structure so that it can be manufactured rapidly with mass production methods.

While a preferred form of the invention has been illustrated and described, it is to be understood that changes in structure and arrangement may be made without departing from the inventive concepts which are only to be limited to the extent dened in the following claims.

What is claimed is:

l. In a gun mount embodying a standard and a cradle supported by said standard, means for detachably supporting a gun on the cradle so as to permit longitudinal sliding movement of the gun during body recoil thereof, s aid means comprising a pair of spaced blocks having openings therein and mounted rigidly with the cradle, a pair of parallel rods slidably mounted in the openings in said blocks, means rigid with said rods for detachably supporting said gun, andy spring recoil absorbing means disposed between and in Contact with said last named means and one of said blocks.

2. In a gun mount embodying a standard and a cradle supported by said standard, means for detachably supporting a gun on the cradleso as to permit longitudinal sliding movement of the gun during body recoil thereof, said means comprising a pair of spaced blocks having openings therein and mounted rigidly with the cradle,`a pair of parallel rods slidably mounted in the openings in said blocks, means rigid with said rods for detachably supporting said gun, and spring recoil absorbing means disposed between said last named means and one of said blocks., said recoil means comprising a, recoil rod the ends of which pass respectively through said last named means and said last named block, -collars fixed on the ends of said recoil. rod, and a pair of coil springs on said recoil rod, one of which springs is disposed between and in contact with said last named block and one of said collars, and the other of which springs is disposed between said last named block and said last named means.

3. In a gun mount embodying a standard and a cradle supported by said standard, means for detachably supporting a gun on the cradle so as to permit longitudinal sliding movement of the gun during body recoil thereof, said means comprising a pair of spaced blocks having openings therein and mounted rigidly with the cradle, a pair of parallel rods slidably mounted in the openings .in said blocks, 4means rigid with said irods for detachably supporting said gun, and

spring recoil absorbing means disposed between said last named means and one of said blocks, said recoil means comprising a recoil rod the ends of which passrespectively through said last named means and said last named block, collars fixed on the ends of said recoil rod, and a pair o f coil springs on said recoil rod, one of which springs is disposed between and in contact with said last named block and one of said collars, the other of said springs being disposed between said last named block and said last named means, said springs having diiering tensional properties, the one of lesser tensional strength being positioned to absorb the rebound shock after recoil of the gun.

4. In a gun mount embodying a standard and a cradle supported by said standard, means for detachably supporting a gill; On the cradle so as to permit longitudinal sliding movement .of the gun during body recoil thereof, said means comprising a pair iof spaced blocks rigid with the cradle, a pair of parallel rods slidably mounted in said blocks, means rigidl with said rods for .detachably supporting said gun, and spring recoil absorbing means disposed between and in contact with said last named means and one of said blocks, said cradle comprising two paralle1 plates. and said blocks comprising the sole means for supporting the plates in said parallel relationship.

SAMUEL G. GREEN. WALTERl H. DARDENNE. WILLIAM J. MEINEL. WEBER DEVORE.

REFERENCES CITED The following referenlces are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,708,232 Moore et al Apr. 9, 1929 1,735,164 Green Nov. 12, 1929 2,220,663 Rossmanith Nov. 5, 1940 2,249,310 Braun et al July 15, 1941 2,293,069 McNeill et al. Aug. 18, 1942 2,318,348 Webb May 4, 1943 2,346,692 Lucht Apr. 18, 1944 FOREIGN PATENTS Number Country Date 674,344 Germany Mar. 29, '1939 

